Dale Creek Bridge, Sherman, Wyoming, 1885. A dangerous crossing that required trains to slow down to 4mph.
I parents live within a 5-mile drive from that location. I don't think the commenters understand how windy that place is. The wood may look more sturdy but it's also a wind sail. The thin "toothpick" structure was most likely designed to allow the wind to pass through without blowing the bridge down.
There's an easy solution to make bridges stable in windy conditions:
(That bridge was built from 1846 to 1851 and it's still used today)
And how do you propose you get all those bricks to some remote pass in Wyoming in the late 19th century? There was 21,000 (non-native) people living in an area larger than the entire United Kingdom in 1880.
I mean... A train?
I get you though; built with what's readily available to meet the needs of the time.